Non-Spring Return Actuators
Spring Return Actuators

M9108, M9116, M9124 and M9132 Series Electric Non-Spring Return Actuators

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The M91xx Series includes M9108, M9116, M9124 and M9132 models. All of these direct-mount line of electric actuators operate on AC/DC 24 V power. The M91xx actuators are available for use with on-off, floating, proportional, or resistive controllers. These bidirectional actuators do not require a damper linkage, and are easily installed on a damper with a round shaft up to a 3/4 in. (20 mm) in diameter or a square shaft up to 5/8 in. (16 mm). They may be direct or remote mounted to a damper, or mounted to a valve using one of the M9000-5xx Valve Linkage Kits. A single M91xx model delivers up to 280 lb·in (32 N·m) of torque. Two -AGx, -GGx, or -HGx models in tandem deliver twice the torque or 560 lb·in. (64 N·m). The angle of rotation is mechanically adjustable from 0 to 90° in. 5-degree increments. Integral auxiliary switches are available to indicate end-stop position or to perform switching functions at any angle within the selected rotation range. Position feedback is available through switches, a potentiometer, or a DC 0(2) to 10 V signal.

Performance Features

  • simple direct coupling reduces installation and commissioning time while improving reliability by eliminating damper linkages
  • six torques: 70 to 560 lb·in (8 to 64 N·m) offer the most suitable choice for the application
  • four control inputs meet the needs of most applications
  • output position feedback provides simple closed-loop control with accurate position sensing
  • electronic stall detection ensures higher reliability by deactivating the actuator motor when a stall condition is detected
  • master/slave operation allows synchronized control for two actuators
  • stacked for tandem applications
  • zero and span adjustment (-HGx models) allows sequential operation of dampers from a single input signal of DC 0(2) to 10 V, DC 0(4) to 20 V, or DC 0(4) to 20 mA
  • jumper-selectable rotation direction and manual gear release simplify installation, setup, and field adjustments
  • NPT threaded housing provides easy connection for electrical fittings
  • manual gear release simplifies damper/valve setup and commissioning